Hi efficient speaker, bass problems

I am not sure what you're asking. Your title says hi efficient but your post mentions low efficient speakers not having a grip on the bass.

My experience tells me that bass control is a function of the amp, and preamp to an extent. I use very hi-eff speakers and get very good control, definition, and impact from a mix of PP and SS amps.

As to your question, I will assume you meant that you don't hear bass control from hi-eff speakers. I posit that most of what you're hearing is probably due to the speakers being driven by SET or some other underpowered amp. Just a guess.

Tmsorosk, it may be a language issue, but the appearance is that your post is in contradiction to the title of the thread. In addition, your post mentions

low efficient speakers

and then in the same sentence

less sensitive units

so its hard to know what you are asking. Would you care to try again?

Hi Tmsorosk,
As mentioned above by others, control is a function of an amplifier, but there is no doubt that High sensitivity speakers typically show the dynamics and control of an amplifier easier. As far as grip and control. I am using a 86db, 4 ohm speaker, it is fast and accurate. I have had speakers as high as 97db 8 ohm, they required much less amplifier to have the speed and transients that I believe that you are referring to as control.

The Question:

It appears Tmsorosk is asking why do high efficiency speakers have poor bass when compared to low efficiency speakers..

The answer;

Because all high efficiency speakers have an uneven bandwidth when being driven. In order to have good fequency balance from top to bottom and good dynamics you always end up losing some efficiency..

There are exceptions , there always are, IMO to have all 3 will require multiple (5+) drivers, no 2 driver system Will do it.

By high efficiency, I'm describing speakers over 94db/2.83v/m (anechoic)

Regards,

Tmsorosk, Please rephrase your question so that we are all clear.
High efficiency: Legacy, Klipsch, VMPS... Which one does not have control with the right amp?
Or was it Low Efficiency?